Nespresso machine series nespresso citiz water tank capacity 1 l types of drink espresso coffee pump pressure 19 bar power 1 260 watt functions flow stop settings adjustable cup fill cups per brew 1 environmental characteristics auto shut off energy saving function operating controls push buttons illuminated buttons water tank features removable water tank cup stand features retractable drip tray auto shut off time 9 min collection container max 10 ca